托福阅读疑问2003年01月份阅读部分第六题6.Which of the following can be inferred from the passage about cotton production in the UnitedStates after the introduction of Whitney's cotton gin?(A) More cotton came from sea island cotton pla

托福阅读疑问2003年01月份阅读部分第六题6.Which of the following can be inferred from the passage about cotton production in the UnitedStates after the introduction of Whitney's cotton gin?(A) More cotton came from sea island cotton pla
托福阅读疑问
2003年01月份阅读部分第六题
6.Which of the following can be inferred from the passage about cotton production in the United
States after the introduction of Whitney's cotton gin?
(A) More cotton came from sea island cotton plants than before.
(B) More cotton came from short-staple cotton plants than before.
(C) Most cotton produced was sold domestically.
(D) Most cotton produced was exported to England.
相关原文部分：
Sea island cotton was relatively
easy to process by hand,because its fibers were long and seeds were concentrated at the
10 base of the flower,but it demanded a long growing season,available only along the
nation's eastern seacoast.Short-staple cotton required a much shorter growing season,
but the shortness of the fibers and their mixture with seeds meant that a worker could
hand-process only about one pound per day.Whitney's gin was a hand-powered machine
with revolving drums and metal teeth to pull cotton fibers away from seeds.Using the gin,
15 a worker could produce up to '50 pounds of lint a day.The later development of larger
gins,powered by horses,water,or steam,multiplied productivity further.
The interaction of improved processing and high demand led to the rapid spread of
the cultivation of cotton and to a surge in production.It became the main American
export,dwarfing all others.
我觉得选B,有谁能帮我解释?感激涕零~

托福阅读疑问2003年01月份阅读部分第六题6.Which of the following can be inferred from the passage about cotton production in the UnitedStates after the introduction of Whitney's cotton gin?(A) More cotton came from sea island cotton pla
肯定选D啊
b的那个short-staple cotton的优点就是一季的时间短 但是需要worker 需要手工地生产这种cotton 且效率低
D答案说出口到英国 最后一句话It became the main American
export,dwarfing all others.
就说明了